Results 21 to 30 of about 100,982 (265)

Effects of divertor geometry on detachment and core plasma performance with impurity seeding in EAST

Nuclear Fusion
Divertor detachment operation compatible with the core plasma is an effective method to alleviate the steady-state heat flux approaching the divertor target; this scheme will be adopted by high-performance tokamaks in the future, such as International ...
L.Y. Meng, L. Wang, J.B. Liu, K.D. Li, X. Lin, X.J. Liu, G.Z. Jia, J. Guo, T. He, L. Yu, P.J. Tang, J.C. Xu, W.M. Zhang, L. Zhang, J.J. Yang, Y.M. Duan, F.B. Zhong, T. Zhang, M.R. Wang, Z.C. Lin, T.Q. Jia, B. Zhang, Q. Zang, Y.W. Yu, Z.X. Chen, G.S. Xu, B.N. Wan   +26 more
doaj   +2 more sources

Energy and particle balance during plasma detachment in a long-leg divertor configuration

Nuclear Fusion, 2023
Comprehensive studies of energy and particle balances in the transition to plasma detachment in an alternative divertor configuration with long outer legs are shown.
R. Masline, S.I. Krasheninnikov
doaj   +2 more sources

Plasma detachment in divertor tokamaks

Plasma Physics and Controlled Fusion, 2018
Abstract Observations of divertor plasma detachment in tokamaks are reviewed. Plasma detachment is characterized in terms of transport and dissipation of power, momentum and particle flux along the open field lines from the midplane to the divertor. Asymmetries in detachment onset and other characteristics between
exaly   +3 more sources

Measurement of N flows in the high-field side scrape-off layer of ASDEX upgrade with different degrees of inner divertor detachment

Nuclear Materials and Energy, 2017
Toroidal and poloidal flows of injected N+ ions were measured in the high-field side (HFS) scrape-off layer (SOL) of ASDEX Upgrade by Doppler spectroscopy with different degrees of HFS divertor detachment.
Luis Guimarais, Eleonora Viezzer, Mathias Groth   +2 more
exaly   +3 more sources

Poloidal Pressure Gradients, Divertor Detachment and Marfes [PDF]

Contributions to Plasma Physics, 1998
AbstractBecause the radiation power density from a marfe scales approximately as the square of its plasma pressure, and since increased radiation would aid divertor detachment for high power tokamaks, this paper identifies regions that might permit locally increased plasma pressure in steady state. The magnetic and dynamic (flow) constraints of magneto‐
Schaffer, M.J., M. J. Schaffer
openaire   +2 more sources

Numerical study of a general criterion for divertor detachment control

Nuclear Fusion
The parameter $R_\mathrm{D} = P_\mathrm{rad}/P_\mathrm{cond}$ , which measures the ratio of radiated power to conductive heat flux at downstream Scrape-Off-Layer (SOL), is proposed as a robust and practically useful figure of merit for divertor ...
Hao Yang, Guido Ciraolo, Olivier Février, Nicolas Fedorczak, Nicolas Rivals, Andreas Bierwage, Hugo Bufferand, Gloria L Falchetto, Tomohide Nakano, Patrick Tamain, Jérôme Bucalossi, the WEST team   +11 more
doaj   +3 more sources

Numerical study of divertor detachment in the MAST-U tokamak [PDF]

, 2022
Divertor detachment is a promising method to reduce heat loading and erosion in tokamak devices or even in future magnetic fusion reactors. In this thesis, two detachment regimes (increasing upstream density and seeding impurity) leading to the decrease ...
Zhou, Yulin
core   +5 more sources

Numerical study of divertor detachment in TCV H-mode scenarios [PDF]

, 2023
International audienceThe effect of divertor closure and nitrogen seeding on the detachment process has been studied by performing 2D numerical simulations of tokamak à configuration variable (TCV) H-mode divertor scenarios with the SOLEDGE3X-EIRENE edge
Galassi, D., Yang, H., Bagnato, F., Fedorczak, N., Henderson, S., Falchetto, G., Bucalossi, J., Tamain, P., Ciraolo, G., Rivals, N., Reimerdes, H., Theiler, C., Gorno, S., Bufferand, H., Février, O.   +14 more
core   +2 more sources

Dependence of particle and power dissipation on divertor geometry and plasma shaping in DIII-D small-angle-slot divertor

Nuclear Materials and Energy, 2022
Dedicated experiments in DIII-D find that magnetic shaping and divertor target geometry significantly affect the divertor plasma conditions and divertor detachment process in the small-angle-slot (SAS) divertor.
H.Q. Wang, X. Ma, R. Maurizio, H.Y. Guo, D.M. Thomas, J.G. Watkins, M.W. Shafer, A.W. Hyatt, A.L. Moser, J. Ren, A. McLean, F. Scotti, P. Stangeby   +12 more
doaj   +1 more source

A study of the influence of plasma–molecule interactions on particle balance during detachment

Nuclear Materials and Energy, 2021
In this work we provide experimental insights into the impact of plasma–molecule interactions on the target ion flux decrease during divertor detachment achieved through a core density ramp in the TCV tokamak. Our improved analysis of the hydrogen Balmer
Kevin Verhaegh, Bruce Lipschultz, James Harrison, Basil Duval, Chris Bowman, Alexandre Fil, Daljeet Singh Gahle, David Moulton, Omkar Myatra, Artur Perek, Christian Theiler, Mirko Wensing   +11 more
doaj   +1 more source